package com.itheima.service.impl;

import com.alibaba.dubbo.config.annotation.Service;
import com.itheima.constant.MessageConstant;
import com.itheima.dao.*;
import com.itheima.entity.Result;
import com.itheima.service.IOrderService;
import com.itheima.utils.DateUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.transaction.annotation.Transactional;

import java.util.Date;
import java.util.List;
import java.util.Map;

@Service(interfaceClass = IOrderService.class)
@Transactional
public class OrderServiceImpl implements IOrderService {

    @Autowired
    private IOrderSettingDao orderSettingDao;

    @Autowired
    private IOrderDao orderDao;

    @Autowired
    private IMemberDao memberDao;

    /**
     * 提交预约信息
     * @param map
     * @return
     */
    @Override
    public Result add(Map map) throws Exception {

        // 1、检查用户所选择的预约日期是否已经提前进行了预约设置，如果没有设置则无法进行 预约
        String  orderDate = (String) map.get("orderDate");
        Date date = DateUtils.parseString2Date(orderDate);
        OrderSetting orderSetting = orderSettingDao.findByOrderDate(date);
        if (orderSetting == null){ // 不存在
            return new Result(false, MessageConstant.SELECTED_DATE_CANNOT_ORDER);
        }

        // 2、检查用户所选择的预约日期是否已经约满，如果已经约满则无法预约
        int number = orderSetting.getNumber();
        int reservations = orderSetting.getReservations();
        if (reservations >= number){ // 预约已满
            return new Result(false, MessageConstant.ORDER_FULL);
        }


        // 3、检查用户是否重复预约（同一个用户在同一天预约了同一个套餐），如果是重复预约 则无法完成再次预约
        String  telephone = (String) map.get("telephone");
        Member member = memberDao.findByTelephone(telephone);
        if (member != null){

            Integer memberId = member.getId();
            Integer  setmealId = Integer.parseInt((String) map.get("setmealId"));
            Order o = new Order(memberId, date, setmealId);

            List<Order> list = orderDao.findByCondition(o);

            if (list != null && list.size() > 0){ // 预约重复
                return new Result(false, MessageConstant.HAS_ORDERED);
            }
        }else {

            // 4、检查当前用户是否为会员，如果是会员则直接完成预约，如果不是会员则自动完成注 册并进行预约
            String name = (String) map.get("name");
            String sex = (String) map.get("sex");
            String idCard = (String) map.get("idCard");
            member = new Member();
            member.setName(name);
            member.setSex(sex);
            member.setIdCard(idCard);
            member.setPhoneNumber(telephone);
            member.setRegTime(date);

            // 会员注册
            memberDao.add(member);
        }
        // 添加到预约列表
        Order order = new Order(member.getId(),date, (String) map.get("orderType")
                ,Order.ORDERSTATUS_NO,Integer.parseInt((String) map.get("setmealId")) );

        orderDao.add(order);

               // 5、预约成功，更新当日的已预约人数
        orderSetting.setReservations(orderSetting.getReservations()+1);
        orderSettingDao.editByOrderSetting(orderSetting);


        return new Result(true,MessageConstant.ORDER_SUCCESS,order.getId());
    }

    /**
     * 预约信息查询
     * @param id
     * @return
     */
    @Override
    public Map findById(Integer id) throws Exception {

        Map map = orderDao.findById(id);

        if (map != null){
            Date  orderDate = (Date) map.get("orderDate");
            String date2String = DateUtils.parseDate2String(orderDate);
            map.put("orderDate",date2String);
        }

        return map;
    }
}
